(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included

Exactly what I needed for supporting my floating fireplace mantle shelf. Although the documentation doesn't say, I contacted the company through the Amazon support tool. They they got back to me very promptly to let me know each bracket can support 200 pounds.

This was installed over a year ago in my hanging granite countertop. It's still holding up fine. It wad easy for my husband to install and works well. We had to have the countertops reinstalled immediately after installation because the company installed scratched granite. We were able to reuse these, thankfully.

I installed new quartz countertops and needed hidden support for the extended bar countertop. The predrilled holes allowed firm anchoring to the 2x4 lumber without problems. The quartz countertop rests perfectly on the brackets without any deflection thanks to their thickness. Extremely happy with the result.

We buy these frequently when installing new kitchens with heavy granite or quartz countertops. They support your countertop without being seen. Their slim design is tucked under the countertop, so if you are sitting at the counter, you don't knock your knees on a giant bracket. Great product that we buy often!

These did the trick! Very solid and robust----easy to install with the hardware included. Perfect!

Did the job . Solid

Worked as described

Used with our granite countertops with 12 inch overhang. Very stable. Screws included.much cheaper than the big home improvement stores.